Alert data quality

In ZTF, we rely a lot on the real/bogus score inside the alert packet to disentangle between artifacts from astrophysical signals. In LSST alert packet, the equivalent of the real/bogus score is the reliability field, which is a score between 0 (artifact) and 1 (real). This field is provided by the Rubin team, and send to us. Unfortunately, as the instrument is new and its tuning changes frequently, it is still quite difficult to provide a reliable reliability score. We advise users to NOT use it blindly. As a matter of fact, the Rubin project launched a Zooniverse campaign using Rubin data to improve the Real/Bogus model (https://www.zooniverse.org/projects/ebellm/rubin-difference-detectives ) to collect enough classifications to do a better model. Stay tuned.

On our side, the Fink commissioning team has been working hard to correlate various alert packet fields with their quality. We design a Fink block, b_good_quality that you can use when designing your filters (Livestream & Data Transfer). A badge on the portal also appears on every object.